Allocated but unannounced space
Every block here was allocated or assigned by a regional internet registry, and none of them appeared in any routing table we collected at our last snapshot — neither as a route of their own, nor covered by a larger announcement, nor carved up into more specifics.
“Unannounced” does not mean “unused”
Plenty of allocated space is deliberately kept off the public internet: private interconnects, lab and lawful-intercept ranges, networks reachable only inside one operator, and space held in reserve. Some of it is announced somewhere our collectors cannot see, which is a limit of our vantage points rather than a fact about the block.
It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today. Nothing on this page means a block is unallocated, available, or free to announce.
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Countries with unannounced space registered through ARIN, largest first.
Unannounced blocks in Netherlands
16 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 199.212.91.0/24 | 256 | ARIN |  NL | 23rd Mar 1994 |
| 2001:504:34::/48 | 65.5k × /64 | ARIN | NL | 13th Dec 2013 |
| 2001:504:38::/48 | 65.5k × /64 | ARIN | NL | 11th Mar 2014 |
| 2001:504:3d::/48 | 65.5k × /64 | ARIN | NL | 26th Jun 2014 |
| 204.231.225.0/24 | 256 | ARIN | NL | 21st Apr 1995 |
| 204.231.226.0/24 | 256 | ARIN | NL | 21st Apr 1995 |
| 204.79.246.0/23 | 512 | ARIN | NL | 21st Apr 1995 |
| 204.79.248.0/22 | 1k | ARIN | NL | 21st Apr 1995 |
| 204.79.253.0/24 | 256 | ARIN | NL | 19th Dec 1994 |
| 204.79.254.0/23 | 512 | ARIN | NL | 19th Dec 1994 |
| 205.233.136.0/23 | 512 | ARIN | NL | 25th Apr 1995 |
| 206.108.115.0/24 | 256 | ARIN | NL | 12th Mar 2014 |
| 206.126.240.0/24 | 256 | ARIN | NL | 13th Dec 2013 |
| 206.41.106.0/24 | 256 | ARIN | NL | 7th Jul 2014 |
| 2602:f91d::/40 | 16.8M × /64 | ARIN | NL | 15th Jan 2025 |
| 2620:66:c000::/48 | 65.5k × /64 | ARIN | NL | 26th Dec 2013 |